My ideas, placed here for discussion and nothing more, but in case anyone is listening:
1) Pull Chestnut completely (or scale it back to a decent 9 hole night course) and dedicate that area for camping, RVing, concerts. Clean up the structures and getting working water, showers, restrooms, and everything to make camping a pleasure. Making this area for non-dg activities will keep the actual courses in better shape because they will not be used for camping and parking. I was there the week after the first Infrasound Concert and there was garbage everywhere, ashed firepits every five feet, broken tents and canopies in the middle of fairways, discarded clothes hidden in the woods, and Gold 8's fairway (the long hole) was torn up to the point of being unplayable.
2) Redesign Gold. That course is a chore to play, and almost not worth it if you do not have carts. The whole course is throw as far as you can without getting deep in the woods. All the other courses have marquee holes, unique shots, and make me want to play them multiple times. The only time my group has played Gold was when I secured carts and played best shot doubles just to minimize how bad it can be.
3) Create and or invest in an online registration system so people know who are showing up, who has reserved what, and what type of other activities will be on the property (concerts, bike rallies, etc). It would be nice to see who I could possible see on the courses and from where - in case we want to meet up and make it a bigger friendly affair. Also, with this online reservation system, accept PayPal and credit cards. Having the ability to dispute charges and or having a guarantee of a refund will make people feel far more comfortable about reserving in advance.
4) Get everything settled, working, and hopefully profitable before spending time in building additional cabins or making/ repairing the Honka House. Then make good with the PDGA and get some major tournaments out there. The additional exposure will do wonders, especially if it is a big enough tournament to have filmed.
5) Whoever you get to manage the place, see if they are also able to run a functioning proshop. This is not going to be a main source of income, but if you can get someone competent to run it, know which discs to order, and how to ship discs, this could be some nice supplemental income if you sell on site as well as have an internet presence, especially if you can get popular discs with a HB stamp or graphic.